Regeneration and characterization of LiNi 0.8 Co 0.15 Al 0.05 O 2 cathode material from spent power lithium-ion batteries.

Autor: Wang Y; College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China., Ma L; National Engineering Laboratory for Industrial Big-data Application Technology, Beijing University of Technology, Beijing 100124, China; College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China., Xi X; National Engineering Laboratory for Industrial Big-data Application Technology, Beijing University of Technology, Beijing 100124, China; College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China. Electronic address: xixiaoli@bjut.edu.cn., Nie Z; National Engineering Laboratory for Industrial Big-data Application Technology, Beijing University of Technology, Beijing 100124, China; College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China., Zhang Y; Jingmen GEM Co., Ltd., Jingmen 448000, China., Wen X; Xiamen Tungsten Co., Ltd., Xiamen 361026, China., Lyu Z; Xiamen Tungsten Co., Ltd., Xiamen 361026, China.
Jazyk: angličtina
Zdroj: Waste management (New York, N.Y.) [Waste Manag] 2019 Jul 15; Vol. 95, pp. 192-200. Date of Electronic Publication: 2019 Jun 13.
DOI: 10.1016/j.wasman.2019.06.013
Abstrakt: The use and scrap of lithium ion batteries, especially power lithium ion batteries in China, are increasing every year. Regeneration of spent battery materials is not only important for environmental protection and resource saving, but also for the production of high value-added materials. In this research, spent power lithium-ion battery cathode material LiNi 1-x Co x O 2 was acid-leached and a polymetallic leaching solution containing Li, Ni, Co, Al and Cu was obtained. Cu was extracted from the leachate by using CP-150 (2-hydroxy-5-nonyl salicylaldehyde oxime). The optimal conditions were found to be organic: aqueous phase ratio (O/A) = 2:1, extraction agent concentration of 30%, and pH = 3. The precursor was prepared by coprecipitation of the leachate after Cu removal. Then, cathode material of lithium nickel cobalt aluminate LiNi 0.8 Co 0.15 Al 0.05 O 2 was synthesized under the optimal conditions of n (precursor): n (lithium carbonate) = 1:1.1, calcination temperature of 800 °C for 15 h. The regenerated LiNi 0.8 Co 0.15 Al 0.05 O 2 product prepared under the optimized conditions was in a pure phase with a layered structure and a smooth surface morphology. The first charge specific capacity was 248.7 mAh/g, and the discharge specific capacity was 162 mAh/g. The interfacial impedance was 119 Ω. The 50th-cycle discharge specific capacity was 149.1 mAh/g, and the capacity retention rate was high as 92%. Therefore, the regenerated cathode material exhibited good performance.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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